Reload of 9500 core switches to activate new DNA license

[Support Cat]

Hi,
we have two Cisco C9500-48Y4C configured as a switch virtual stack as our Core switch in CGH. We need to get Netflow stats off this pair of switches. To do this we know we need to reload the switches so that the DNA advantage license which we have already purchased will come into effect.
Our question is can we reboot one switch at a time to minimize disruption to service or is there another way of applying for the license without reloading the devices, or do both devices have to be reloaded at the same time to pick up the new license/technology package? 
Please see show version below:
Technology Package License Information:

@umairkha 

------------------------------------------------------------------------------
Technology-package Technology-package
Current Type Next reboot
------------------------------------------------------------------------------
network-advantage Smart License network-advantage
None Subscription Smart License dna-advantage
AIR License Level: AIR DNA Advantage
Next reload AIR license Level: AIR DNA Advantage

Smart Licensing Status: REGISTERED/AUTHORIZED

cisco C9500-48Y4C (X86) processor with 1867777K/6147K bytes of memory.

[balaji.bandi]

as per the information, you alreadyy applied the License, then reload stanby one, then current active role one.

if you have downtime, i would do fresh reload both switches - for clean and clear.